3COM RMON-EMP-3 User Manual

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ONline Ethernet RMON MultiProbe

Module Installation and Operation

Guide

Document Number 17-0 0519-2

Printed March 1996

Model Number: RMON-EMP-3

Software Version 1.0

3Com Co rporation 118 Turnpike Road

Southbo rough, MA 01772-1886

U.S.A.

(508) 46 0- 8900

FAX (508) 460-8950

Federal Communications Comm ission Notice

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment i s operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to rad io communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you must correct the interference at your own expense.

Canadian Emissions Requirements

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet apparei l numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

VDE Class B Compl ianc e

Hiermit wird bescheinigt, dass der RMON-EMP-3 in Üebereinstimmung mit den Bestimmungen der Vfg 243/1991 funkentstöert ist.

Der Deutschen Bundespost wurde das Inverkehrbringen dieses Geraetes angezeigt und die Berechtigung zur Üeberprüefung der Serie auf Einhaltung der Bestimmungen eingeräeumt.

Einhaltung mit betreffenden Bestimmugen kommt darauf an, dass geschirmte Ausfuehrungen gebraucht werden. Fuer die Beschaffung richtiger Ausfuehrungen ist der Betreiber verantwortlich.

This is to certify that the RMON-EMP-3 is shielded against radio interference in accordance with the provisions of Vfg 243/1991.

The German Postal Services have been advised that this equipment is being placed on the market and that they have been given the right to inspect the series for compliance with regulations.

Compliance with applicable regulations depends on the use of shielded cables. The user is responsible for procuring the appropriate cables.

EN55022/CISPR22 Com p lian ce

This equipment conforms to the Class A emissions limits for a digital device as defined by EN55022 (CISPR22).

VCCI Class 1 Compl i an ce

This equipment is in the 1st Class category (informa tion equipment to be used in commercial or industrial areas) and conforms to the standards set by the V oluntary Control Council for Inter fere nce by Information Technology Equipment aimed at preventing radio interference in commercial or industrial areas.

Consequently, when the equipment is used in a residential area or in an adjacent area, r adio interferenc e may be caused to radio and TV receivers, and so on.

Read the instructions for correct handling.

UK General Approval Statem en t

The ONcore Switching Hub, ONline System Concentrator, and ONsemble StackSyste m Hub are manufactur ed to the International Safety Standard EN 60950 and are approve d in the UK under the Genera l Approval Number NS/G/12345/J/100003 for indirect connection to the public telecommunication network.

Disclaimer

The information in this document is subject to change without notice and should not be construed as a commitment by 3Com Corporation. 3Com Corporation assumes no responsibility for any errors that may appear in this document.

1996, by 3Com Corporation. Printed in U.S.A. All rights r eserved. 3Com is a registered trademark of 3Com Corp oration. ONcore is a registered trademark of 3Com Corporation. The informat ion contained herein is the exclusive and confidential property of 3Com Corporation. No part of this manual may be disclosed or reproduced in whole or in part without permission from 3Com Corporation.

Trademarks and Patents

Because of the nature of this material, numerous hardware and software products are mentioned by name. In most, if not all cases, these product names are claimed as trademarks by the companies that manufacture the products. It is not the intent of 3Com Corporation to claim these names or trademarks as its ow n.

3Com, Artel, Boundary Routing, CardBoard, CardFacts, Galactica, EtherDisk, EtherLink, EtherLink II, EtherLink Plus, LANplex, LANsentry, LinkBuilder, NETBuilder, NETBuilder II, NetFacts, ONcore, ONsemble, ORnet, Parallel Tasking, SmartAgent, StarBridge, T okenLink, Tok enLink Plus, TriChannel, and View Builder are registered trademarks of 3Com Corporation.

ii Ethernet RMON MultiProbe Module Installation and Operation Guide

3Com Laser Library, 3Com OpenHub, 3TECH, FDDILink, FMS, G-Man, MultiProbe, NetProbe, OnDeck, ONdemand, ONline, PowerRing, StackJack, StackWay, Star-Tek, SwitchCentral, and Transcend are trademarks of 3Com Corporation.

3ComFacts and Ask3Com are service marks of 3Com Corporation. The 3Com Multichannel Architecture Communications System is

registered under U.S. Patent Number 5,301,303. 3Com registered trademarks are registered in the United States,

and may or may not be register ed i n other countrie s. Other brand and product names may be reg istered tradema rks or trademark s of their respective holders.

AT&T is a registered trademark of American Telephone and Telegraph Company.

Banyan and VINES are registered trademarks of Banyan Systems Inc.

CompuServe is a registered trademark of CompuServe, Inc. ProComm is a registered trademark of DATASTORM

TECHNOLOGIES, INC. DA TAST ORM is a trademar k of DA T AST ORM TECHNOLOGIES, INC.

DEC, DECnet, DELNI, POLYCENTER, VAX, VT100, VT220, and the Digital logo are trademarks of Digital Equipment Corporation.

Hayes is a r egistered tradema rk of Hay es Micr ocomputer Products. OpenView is a r egister ed tradema rk of Hewlet t-Packard Company . Intel is a registered trademark of Intel Corporation. AIX, IBM, and NetView are re gistere d trade mark s of International

Business Machines Corporation. Microsoft and MS-DOS are registered trademarks of Microsoft

Corp. Windows is a trademark of Microsoft Corp.

OSF and OSF/Motif are registered trademarks of Open Software Foundation, Inc.

V30 is a trademark of NEC Corporation. NetWare and Novell are registered trademarks of Novell,

Incorporated. IPX is a trademark of Novell, Incorporated.

Retix is a regi stered trademark of Retix. ROUTERXchange is a trademark of Retix.

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UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

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Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subpar agraph (c)(1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013.

Printed on recycled paper.

Ethernet RMON MultiProbe Module Installation and Operation Guide iii

iv Ethernet RMO N MultiProbe Module Installation and Operati on Guide

How to Use This Guide

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Structure of This Guid e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv

Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvi

3Com Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Chapter 1 — Introduction

RMON Over view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

RMON Architect ure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

RMON Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

RMON Client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Ethernet RMON Group s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

RMON MultiProb e Mo du l e Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

RMON MultiProb e Mo du le Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Sample Applicatio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Contents

Chapter 2 — Installing the Module

Precautionary Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Quick Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Unpacking Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Installing the RMON MultiProbe Module . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Connecting a Termi nal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Initializing the RM ON MultiProbe Module . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Monitoring the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Ethernet RMON MultiProbe Module Installation and Operation Guide v

Chapter 3 — Configuring the Module

Configuration Men u Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Modifying Configuratio n Menu Values . . . . . . . . . . . . . . . . . . . . . . . 3-5

Using the Main Configu ration Menu . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Using the Downlo ad M enu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Using the Modify/View Configuration Values Menu . . . . . . . . . . . . 3-11

Using the Modify/View Serial Configuration Values Menu . . . . . . . . 3-13

Modem Init Strings and Hang up String s . . . . . . . . . . . . . . . . . . 3-17

Modem Response Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Using the Modify /View Network Settings Menu . . . . . . . . . . . . . . . 3-20

Using the Modify/View Netw or k Interfac e Settings M enu s . . . . . . . 3-23

Configuring the Module and Interfaces . . . . . . . . . . . . . . . . . . . . . . . . 3-26

Assigning the Interface IP Address and Subnet Mask . . . . . . . . . . . 3-26

Assigning the Module Default G atew ay . . . . . . . . . . . . . . . . . . . . . 3-28

Using BOOTP to Configure the Module and Interfaces . . . . . . . . . . 3-29

BOOTP Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

BOOTP Configu ratio n Process . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

BOOTP Req uirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

Using BOOTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

Sample BOOTPtab file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

Assigning Interfaces to Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

Using the DIP Switch to As sign Netw orks . . . . . . . . . . . . . . . . . . . . 3-33

Using Managemen t Commands to Assign Interfaces to Netwo rks . . 3-35

Management Comm and Examp les . . . . . . . . . . . . . . . . . . . . . . 3-36

Saving Network As signments . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

Showing Mod ule and Interf ac e Config urati ons . . . . . . . . . . . . . . . . . . . 3-37

Show Module Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

Show Port Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

Re-initializing th e RMON MultiProbe Module . . . . . . . . . . . . . . . . . . . . 3-40

Warm-Startin g the RMON Mu ltiPro be M od ule . . . . . . . . . . . . . . . . 3-41

Cold-Startin g the R MON Mu ltiPr obe M od ule . . . . . . . . . . . . . . . . . 3-42

vi Ethernet RMON MultiProbe Module Installation and O peration Guide

Chapter 4 — Troubleshooting

Troubleshooting Startup Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Troubleshooting Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Troubleshooting Netw ork C on necti vity Problems . . . . . . . . . . . . . . . . . . 4-8

Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Appendix A — Specifications

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Environmental Spec ific ation s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Mechanical Specificatio ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Connectors and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

RS-232 25-Pin Port Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . .A-5

RS-232 Crossover Cable for a PC or Terminal . . . . . . . . . . . . . . . . . . A-6

Modem Cable Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Sample Out-of-Band Connections . . . . . . . . . . . . . . . . . . . . . . . .A-7

Using the RMON Mu ltiPro be M od ule SLIP Addr ess . . . . . . . . . . . A-9

RS-232 Straight-Through Cable . . . . . . . . . . . . . . . . . . . . . . . .A-10

RS-232 Null-Modem Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-11

Memory Con figu ration Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-12

Appendix B — Technical Support

On-line Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Email Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

World Wide Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Support from Your Netw ork Sup plier . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Support from 3Com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Returning Produ cts for Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Accessing the 3Com MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

3Com Technical Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Index

Ethernet RMON MultiProbe Module Installation and Oper ation Guide vii

viii Ethernet R MON MultiProbe Module Installation and Operation Gui de

Figures

Figure 1-1. RMON Sampl e App licat ion . . . . . . . . . . . . . . . . . . . . . . . 1-9

Figure 2-1. RMON MultiProbe Module in the

Figure 2-2. Main Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . 2-9

Figure 2-3. RMON MultiProbe Module Front Panel LEDs

Figure 3-1. Configuration Men u Flow C hart . . . . . . . . . . . . . . . . . . . 3-3

Figure 3-2. Main Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figure 3-3. Download Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Figure 3-4. Modify/View Con figu ration Values Menu . . . . . . . . . . . 3-11

Figure 3-5. Modify/View Serial Con figu ratio n Values Menu . . . . . . . 3-14

Figure 3-6. Modify/View Network Settin gs Men u . . . . . . . . . . . . . . 3-21

Figure 3-7. Modify/View Network Int erface 1 Settings M enu . . . . . 3-24

Figure 3-8. DIP Switch Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

Figure A-1. RS-232 Crossover Cable for a Terminal With a

Figure A-2. Out-of-Band Connections to the RMON

Figure A-3. RS-232 Straigh t-Th rou gh Cable Pinouts . . . . . . . . . . . .A-11

ONline System Concentrator . . . . . . . . . . . . . . . . . . . . . . 2-6

and Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

25-Pin Connecto r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6

MultiProbe Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-8

Ethernet RMON MultiProbe Module Installation and Operation Guide ix

x Ethernet RMON MultiProbe Module Installation and Operation Guide

Tables

Table 2-1. Quick Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Table 2-2 . Mo du le LED Interpretations . . . . . . . . . . . . . . . . . . . . . . 2-12

Table 3-1 . Main Co nfi guration Menu Description . . . . . . . . . . . . . . . 3-8

Table 3-2 . Do wnload Menu Descripti on . . . . . . . . . . . . . . . . . . . . . 3-10

Table 3-3. Modify/View Configuration Values Menu

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Table 3-4. Modify/View Serial Configuration Values

Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Table 3-5 . Mo dem Init Strings and Hangup String s. . . . . . . . . . . . . 3-17

Table 3-6. Conn ect Respo nse String Examp l e . . . . . . . . . . . . . . . . . 3 -19

Table 3-7 . Modify/View Network Settings Menu Descr iption. . . . . . 3 -22

Table 3-8. Modify/V iew Network Interface Settings Menu

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

Table 3-9. Network Selection DIP Switch Settings. . . . . . . . . . . . . . 3-34

Table 3-1 0. RMON MultiProbe Module Information Preserved

and Lost on Warm Start. . . . . . . . . . . . . . . . . . . . . . . . . 3-41

Table 3-1 1. RMON MultiProbe Module Information Preserved

and Lost on Cold Start. . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

Table 4-1. Diag no stic Tests and Interface Status LEDs. . . . . . . . . . . . 4-2

Table 4-2. Trou blesh ooting Malfu nc tions . . . . . . . . . . . . . . . . . . . . . 4-3

Table A-1. RMON MultiProbe Module RS-232 25-Pin Port

Connecto r Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5

Table A-2. RS-232 Straight-Through Cable Pinouts . . . . . . . . . . . . .A-10

Table A-3. Maximum Number of Entries for Ethernet Tables . . . . . .A-12

Ethernet RMON MultiProbe Module Installation and Operation Guide xi

xii Ethernet RMON MultiProbe Mod ule Installation and Operation Guide

This guide describes how to install the 3Com Ethernet RMON MultiProbe™ Module into the 3Com ONline™ System Concentrator and the ONcore® Switching Hub. This guide also provides troubleshooting suggestions to use if a problem occurs with the module.

Audience

This guide is intended for the following people at your site:

How to Use This Guide

❑ Network manager or administrator ❑ Hardware installer

Ethernet RMON MultiProbe Modu le Installation and Operation Guide xiii

Structure of This Guide

This guide contains the following chapters and appendix: Chapter 1, Introduction – Provides an introduction to the 3Com Ethernet

RMON Mul tiProbe Module. Chapter 2, Installing the Module – Describes the installation

procedures for the module and describes how to monitor the front panel. Chapter 3, Confi gurin g the Module – Descr ibes how t o con fig ure the

module for op er ation. Chapter 4, Troubleshooting – Describes troubleshooting information

for correcting possible problems during module installation or operation. Appendix A, Specifications – Provides specifications for the RM O N

MultiProbe Module. Appendix B, Technical Support – Lists the various methods for

contacting the 3Com technical support organization and for accessing other product support services.

Index

xiv Ethernet RMON MultiProbe Module Installation and Operation Guide

Document Conventions

The following document conven tions are used in this guide:

Convention Indicates Example

Courier text User input In the Agent Information Form,

System output After pressing the Apply

enter MIS in the New Contact field.

button, the system displays the message Transmi tt in g da ta .

Bold command string

Italic text in braces User-substituted

Capitalized text in plain brackets

Italics Text emphasis,

Path names Before you begin, read the

identifiers

Keyboard entry by the user

document titles

readme.txt file located in /usr/snm/agents.

Use the following command to show port details:

SHOW PORT {

Type your password and press [ENTER].

Ensure that you press the Apply button after you add the new search parameters.

slot

.all} VERBOSE

Ethernet RMON MultiProbe Module Installation and Oper ation Guide xv

Convention Indicates Example

Note: A Note. The

Caution: A Caution. A

Warning: A Warning. A

3Com Documents

The following documents provide additional information on 3Com products:

ONline System Concentrator Installation and Operation Guide - Provides information on the installation, op eration, and configuration of the ONline System Concentrator. This guide also describes the principal features of the ONline Fault-To lerant Controller Module.

ONcore Switch ing Hu b Installa tion an d Opera tion Gu ide - Provides information on the installation, op eration, and configuration of the ONcore Switching Hub. This guide also describes the principal features of the ONcore Fault-Tolerant Controller Module.

ONline Ethernet Management Module Installation and Operation Guide Provides information on the operation , installation, and configuration of the ONline Ethernet Management Module.

Distributed Management Module User’s Guide - Provides information on the operation, installation, and configuration of the ONcore Distributed Management Module. This guide also describes the software commands associated with the Distributed Management Module.

ONline Ma nage me nt C omm and s Gu ide - Describes the software commands associated with the ONline Management Modules.

Distributed M a nage me nt M odu le C omm an ds Gu ide - Describes each management command by providin g detailed information on the commands’s fo rmat, use, and description.

For a complete list of 3Com documents, contact your 3Com representative.

Ethernet RMON MultiProbe Module Installation and Operation Guide xvii

Reference Documents

The following documents supply related background information:

Case, J., Fedor, M., Scoffstall, M., and J. Davin, The Simple Network Management Protocol, RFC 1157, University of Tennessee at Knoxville,

Performance Systems International and the MIT Laboratory for Computer Science, May 1990.

Rose, M., and K. McCloghrie, Structure and Identification of Management Information for TCP/IP-based Internets, RFC 1155 ,

Performance Systems International and Hugh es LAN Systems, May 1990. Waldbusser S., Remote Networ k Monitoring Management Information

Base, RFC 1757, Carnegie Mellon University, February 1995.

xviii Ethernet RMON MultiProbe Module Installation and Operation Guide

Introduction

This chapter provides an introduction to the 3Com Ethernet RMON MultiProbe Module (hereafter referred to as the RMON MultiProbe Module). The RMON MultiProbe Module is managed by the following 3Com management modules:

❑ ONcore® Distributed Management Module (Version V2.10) ❑ ONline Ethernet Management Module (Version V4.20)

This chapter contains the following sections:

❑ RMON Overview ❑ RMON MultiProbe Module Overview ❑ RMON MultiProbe Module Features

Introduction 1 - 1

RMON Overview

Remote Monitoring (RMON) is a standards-based network management tool that allows you to efficiently and effectively monitor segments throughout the network. You can use RMON to id en tify and isolate potential problems in your network before disruptions occur.

RMON-compliant devices operate without impacting network operation. They function as promiscuous devices, which listen to and capture data on the network, but do not add ad ditional traffic.

The following sections describe :

❑ RMON Architecture ❑ Ethernet R MO N Groups

RMON Architecture

RMON techn ology requires two components within a network:

❑ RMON Probe ❑ RMON Client

RMON Probe

An RMON probe contains both hardware and software, and is referred to as the RMON agent. As a promiscuous device, the RMON probe:

❑ Observes packets on the network ❑ Captures packets that match user-defined criteria ❑ Stores packets from the network segment

Through the packet capture and store feature, the RMON agent provides an extensive set of Ethernet-based statistics to the network manage r.

1 - 2 Ethernet RMON MultiProbe Module Installation and Operation Guide

RMON Client

The RMON Client consists of a management station running an application that uses SNMP (such as the 3Com ONdemand LANsentry™ software) to request data from the probe and display that data in various formats. You can also use the graphical interface to configure the RMON agent.

The client application does not have to be located on the same segments as the network to which the probe is assigned, but does need connectivity to the networks.

Etherne t RMON Groups

The Ethernet RMON standard is defined in Request For Comment (RFC) 1757 (formerly 1271). The goal of the standard is to ensure interoperability in multivendor environments. As defined by the RFC standards for Ethernet RMON, the Ethernet RMON specification identifies the following RMON groups:

❑ Alarm Group - Allows you to define and set thresholds for various

counters. If a counter reaches a predefined threshold, an event is generated. (See Event Group below. )

❑ Event Group - Controls the action taken as a result of an event, (an

event can be triggered by an alarm). For example, if a counter reaches a threshold, then a trap may be generated or an event may be logged.

❑ Filter Group - Instructs the RMON Mult iProbe Module to capture

only those packets that match a specific criteria (such as IP Protocol or a specific MAC address).

❑ History Group - Provides histo rical views of statistics based on

predefined sampling intervals. This information illustrates traffic or error patterns, which can be useful in trend analysis.

❑ Host Group - Contains statistical counters, grouped by MAC address,

specific to each station on the network. This group also contains the order in which devices or stations were discovered.

Introduction 1 - 3

❑ HostT opN Group - Sorts stations by top traffic contributors. You can

use this information to identify the most active hosts on a segment or the hosts producing the most errors.

❑ Matrix Group - Collects statistics between pairs of device s on the

network and tracks information specific to each connection, such as the number of packets transmitted between devices.

❑ Packet Capture Group - Handles the capture and uploading of

packets collected by the RMON MultiProbe M odule.

❑ Statistics Group - Contains cumulative traffic and error statistics (for

example, packet distribution, and Cyclic Redundancy Check) for each device being monitored.

1 - 4 Ethernet RMON MultiProbe Module Installation and Operation Guide

RMON MultiProbe Modu le Overvi ew

The RMON MultiProbe Mo dule is a single-slot Ethernet mo dule that you install in an ONline and ONcore hub. The RMON MultiProbe Module can monitor up to three Ethernet networks simultaneou sly and perform all functions on all networks in parallel.

The RMON MultiProbe Module supports:

❑ UDP/IP (User Datagram Protocol/Internet Protocol) over Ethernet ❑ SLIP (Serial Line Internet Protoco l ) ❑ SNMP (Simple Network Management Protocol ) over UD P for

management access

❑ ICMP (Int e rnet Control Message Protocol) Echo and Redirect

Introduction 1 - 5

RMON MultiProbe Modu le Features

When you use the RMON MultiProbe Module in conjunction with an RMON client application, you can:

❑ Monitor the network ❑ Generate reports based on network information ❑ Filter and capture packets ❑ Process events and thresholds ❑ Detect network events

In addition, the RMON MultiProbe Module monitors:

❑ Per-network collisions ❑ Per-port collisions (PPC) ❑ Port-address correlation (PAC)

1 - 6 Ethernet RMON MultiProbe Module Installation and Operation Guide

Other benefits of the RMON MultiProbe Module include:

❑ 3Com T riChannel™ Architecture - The RMON MultiProbe Module

operates in an ONline System Concentrator and an ONcore Switching Hub.

❑ Slot Independence - Y ou can install modules into any available slot

in a 3Com ONline or ONcore hub. This flexibility eliminates the need to shut down the network and rearrange the existing configuration of the concentrato r when you install new modu les.

❑ Hot Swap Capability - Y ou can install or remove modules from the

ONline or ONcore hubs when the hub is pow ered up without affecting the operation of any other modules in the concentrator.

❑ Management Support - You can manage the RMON M ultiProbe

Module through the 3Com® ONdemand LANsentry application. Y ou can also manage the module using terminal management through an ONline Ethernet Management M odule (EMM) or an ONcore Distributed Management Module (DMM).

❑ Compliance - The 3Com Ethernet RMO N MultiProbe Module

complies with the RM O N standard as defined by RFC 1757 .

Introduction 1 - 7

Theory of Operation

This section describes the theory of operation for the RMON MultiProbe Module.

The RMON MultiProbe Module:

❑ Supports simultaneo us analysis of three Ethernet channels ❑ Monitors the network proactively

For example, when a network event occurs or a problem becomes apparent in the network, you use a protocol analyzer to attempt to isolate and correct the problem. RMON technology also provides you with protocol analyzer capabilities. However , RMON takes a more proactive approach to netwo rk monitoring by:

❑ Alerting you of network events before they can become a problem ❑ Providing you with information to help isolate problems

You can also confi gure the RMON MultiProbe Module to check continuously for specific error conditio ns and notify you or log the event when the conditions occur.

1 - 8 Ethernet RMON MultiProbe Module Installation and Operation Guide

Sample Application

Figure 1-1 illustrates a sample application of RMON MultiProbe Modules in a concentrator monitoring Ether net segments in Boston and New York. With the appropriate interconnection s, yo u can view the RMON data collected by the RMON MultiProbe Modules from a client w orkstation application in Los Angeles

Router

RMON Module

Boston

RMON

Module

Los AngelesNew York

Management Console with RMON Client Application

Router

Figure 1-1. RMON Sample Application

Introduction 1 - 9

Installing the Module

This chapter contains the following sections:

❑ Precautionary Procedures ❑ Quick Installation ❑ Unpacking Procedures ❑ Installing the RMON MultiProbe M odule ❑ Connecting a Terminal ❑ Initializing the RMON MultiProbe Module ❑ Monitoring the Front Panel

Installing the Module 2 - 1

Precautionary Procedures

Caution: Electrostatic discharge (ESD) can damage

static-sensitive devices on circuit boards.

When you handle the module:

❑ Do not remove the boa rd from its antistatic shielding bag unt il you

are ready to inspect or install it.

❑ Handle the board by the faceplate only .

Use proper grounding techniques when you install the module, including:

❑ Using a footstrap and grounded mat or wearing a grounded static

discharge wrist stra p .

❑ Touching the grounded rack or other source of ground just before

you handle the module.

2 - 2 Ethernet RMON MultiProbe Module Installation and Operation Guide

Quick Install atio n

Table 2-1 outlines the steps necessary to complete the installation of the RMON MultiProbe Module. If you are familiar with installing 3Com modules, use this table as a checklist. Otherwise, consult the remainder of this chapter.

Table 2-1. Quick Installation Steps

Step Procedure Chapter/Section

1 U npack the module. Chapter 2, Unpacking

Procedures section

2 Install the module into an open slot in

the hub.

3 Connect a terminal or management

workstation to the RS-232 console port on the module faceplate.

4 Assign an IP address a nd subnet mask

for each RMON interface using a BOOTP server or the configuration menus.

5 Assign a default gateway for the

module using the configuration menus or BOOTP.

6 Configure the RMON interfaces to a

network using either the DIP switch or the SET PORT command.

7 Configure optional module

parameters using the configuration menus.

Chapter 2, Installing the Module section

Chapter 2, Connecting a T erminal section

Chapter 3, Assigning the Interface IP Address and Subnet Mask section

Chapter 3, Assigning the Module Default Gateway section

Chapter 3, Assigning Interfaces to Networks section.

Chapter 3, Configuring the Modul e

Installing the Module 2 - 3

Unpacking Procedures

To unpack the RMON MultiProbe Module:

1. Verify that the RMON MultiProbe Module (Model Number RMON-EMP-3) is the model you ordered by checking the model number listed on the side of the shipping carton.

Note that the product model number prin ted on the shipping box differs from the model number on the product. The model number on the shipping box contains the prefix ‘3C9’.

2. Remove the module, in its antistatic bag, from the shipping carton .

3. Remove the module from the antistatic shielding bag and inspect it for damage.

Always handle the module by the faceplate, being careful not to touch the components. If the module appears to be damaged, return it to the anti-static shielding bag, repack it in the shipping carton, and contact your local supplier.

Keep the shipping carton and anti-static shielding bag in which your module was shipped so that you can repackage the module for storage or shipment.

2 - 4 Ethernet RMON MultiProbe Module Installation and Operation Guide

Installing t he RMON MultiProbe Module

You do not need to power down the hub to install or r emove the RMON MultiProbe Module. You can insert the module while the hub is operating (this is called a hot swap).

To install the RMON MultiProbe Module:

1. Properly ground yourself p rior to handling the module. For example, wear a static wrist guard or touch a grounded static

mat prior to handling the m odule.

2. Locate an open slot in the hub. Remove a blank panel on the hub to expose a slot for the module, if nec essary.

3. Insert the module into the board guides at the top and bottom of the slot and slide it into the hub by pressing firmly at the top and bottom of the faceplate. Make sure the connectors are well-seated into the backplane of the hub.

Once you install the module, it automatically begins self-diagnostics and initializes.

Installing the Module 2 - 5

Figure 2-1 shows the RMON MultiProbe Module installed in an ONline System Concentrator. You c an also install the RMON MultiProbe Module in the ONcore MultiProtocol Switching Hub using an ONline Module Adapter Kit.

RMON MultiProbe Module

Figure 2-1. RMON MultiProbe Module in the

ONline System Concentrator

4. Using your fingers, tighten the spring-loaded screws on the front of the module faceplate (do no t overtighten). Once you install the RMON MultiProbe Module, it begins diagnostic testing automatically.

5. Connect one end of an RS-232 cable to the RS-232 port on the front of the module.

6. Connect the other end of the cable to a terminal (as described in the next section).

2 - 6 Ethernet RMON MultiProbe Module Installation and Operation Guide

Connecting a Terminal

You can co nnect a terminal or workstation runn ing a terminal emulation program to th e R MO N MultiProbe Module RS-232 port to:

❑ Configure IP address information for the RMON MultiProbe Module

interfaces

❑ Display the RMON MultiProbe Modul e configuration

To connect a terminal to the RMON MultiProbe Module:

1. Verify that the terminal is configured as follows:

❑ 8-bit data ❑ No parity ❑ 1 stop bit ❑ 9600 baud rate

Note: The RMON MultiProbe Module does not support XON and

XOFF.

2. Using an RS-232 null-modem cable, attach a terminal (or a workstation running ASCII terminal emulation software) to the RMON MultiProbe Module RS-232 port.

Installing the Module 2 - 7

Initializi n g the RM ON Multi P robe Mod ul e

Once you complete module installation procedures and attach an RS-232 cable to the front panel, you ca n initialize the RMON MultiProbe Module and display the configuration menus.

To initialize the RMON MultiProbe Module and display th e configuration menus:

1. Press the front panel Reset button. Pressing the Reset button warm-starts the module. (Refer to Chapter 3, Configuring the Module, for a description of warm and cold starts.)

When reset, the module comp letes diagn ostics and initializes.

2. To display the RMON MultiProbe Module Main configuration menu, hold down the X key on the terminal keyboard within 15 seconds of powering up or resetting the module. If you do not hold down the X key within 15 seconds, the RMON MultiProbe Module:

a. Begins monitoring the network b. Reports any error messages if the module experiences an error

condition

3. If you miss the 15-second window, press the Reset button to re-initialize the module.

4. When you ho ld down the X key, the following banner is displayed:

Tests interrupted! Boot System Version x.xx for Ethernet RMON Multi Pr obe , Re v x Built on Thu April x, 17:36:58 EST 199x

Loading configuration system. Entering configuration system. Please

wait.....

2 - 8 Ethernet RMON MultiProbe Module Installation and Operation Guide

The Main configuration menu appears (Figure 2-2).

Main menu Rev x.xx (Rev x.x)

1 Modify/View configuration values ->

2 Download new firmware ->

3 Warm start and Exit

4 Cold start and Exit

Enter one of: 1 2 3 4 ?

Figure 2-2. Main Configuration Menu

5. Refer to Chapter 3, Configuring the Module, for a description of the configuration menus and instructions for configuring the module and its interface s using the configuration menus.

Once you configure the RMON MultiProbe Module and it initializes successfully , the module begins to operate normally and monitor the network.

Note: Hardware flow control is not active on the RMON

MultiProbe Module when you are using the configuration menus. Depending on the Serial Port Mode setting, hardware flow control is active when you exit the configuration menus.

For information on the Serial Port Mode settings, refer to Chapter 3, Configuring the Module, Table 3-4 Modify/V iew Serial Configuration Values Menu Description.

Installing the Module 2 - 9

Monitoring the Front Panel

Use the LEDs on the front panel of the RMON MultiProbe Module to monitor the status of the module and the module interfaces. The RMON MultiProbe Module front panel also contains a recessed Reset button for resetting the module.

Resetting the module is equivalent to a warm start. Refer to Chapter 3, Configuring the Module, the section titled Re-Initializing the RMON MultiProbe Module for information on warm and co ld starts.

When you install the RMON MultiProbe Module in the hub, an Interface Status LED illuminates for each interface after the following conditions are met:

❑ The RMON MultiProbe Module completes self-d iagnostics and

initializes.

❑ You assign an interface to a network (the interface is enabled

automatically once you assign a network using a 3Com management module or set the DIP switches).

The Module Status LED illuminates once the module completes self-diagnostics and initializes (45 seconds).

2 - 10 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Figure 2-3 shows the LEDs, Reset button, and RS-232 port on the module faceplate. Each LED indicates the state of the m odule or interface as described in Table 2-2.

Interface 1 LEDs Interface 2 LEDs Interface 3 LEDs

Status Collision Activity

Module Status

Module Reset

RS-232/SLIP Port

LEDs

Serial Activity

25-Pin Connecto r

Figure 2-3. RMON MultiProbe Module Front Panel LEDs

and Reset Button

Installing the Module 2 - 11

Table 2-2. Module LED Interpretations

LED Name Color State Indicates

Interface1 Interface 2 Interface 3 (Interface Status)

Collision (Interface Collision)

Activity (Interface Activity)

Module Status Green Off Module failed diagnostics. This

Green Off Interface is set to isolated

(not assigned to any network).

On Interface is configured to a

network and is enabled.

Blinking LED blinks briefly during

diagnostics.

Yel low Off Interface is not experiencing

collisions or is isolated .

Blinking Interface is experiencing

collisions. Blinks once for each collision detected.

Yellow Off No traffic is being passed or

interface is isolated.

Blinking Monitors received traffic.

Blinks once for each packet received.

indicates an unrecoverable hardware or software error . Contact the 3Com Customer

Service Center. On Module is operating correctly. Blinking Blinks at 1-second intervals

during module initialization.

2 - 12 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Table 2-2. Module LED Interpretations (Conti nue d)

LED Name Color State Indicates

Serial Activity Yellow Blinking Activity over the RS-232 port.

Blinks once for each character

received or transmitted.

Reset Button Black When

pressed

Re-initializes module software

and resets module hardware.

Installing the Module 2 - 13

Configuring the Module

This chapter describes how to configure the 3Com Ethernet RMON MultiProbe Module fo r op er ation.

This chapter contains the following sections:

❑ Configuration Menu Overview ❑ Configuring the Module and Interfaces ❑ Assigning Interfaces to Networ ks ❑ Showing Module and Interface Configurations ❑ Re-initializing the RMON Mult iProbe Module

Configuring the Module 3 - 1

Configuration Menu Overview

This section describes the RMON MultiProbe Module configuration menus and how to use the menus to configure the module and interface. The configuration menus enable you to configure the module and interfaces using a terminal attached to the front panel RS-232 port and an RS-232 null-modem cable. (Refer to Appendix A, Specifications, for information on cable pinouts.)

This section includes:

❑ Modifying Configuration Menu Values ❑ Using the Main Configuration Menu ❑ Using the Download Menu ❑ Using the Modify/View Configuration Values Menu ❑ Using the Modify/View Serial Configuration Values Menu ❑ Using the Modify/View Network Settings Menu ❑ Using the Modify/View Network Interface Settings Menu

3 - 2 Ethernet RMON MultiProbe Module Installation and Operation Guide

Figure 3-1 is a flow chart of the RMON MultiProbe Module configuration menus.

Main Me nu

1 Modify/View configuration values 2 Download new fi rm wa re 3 Warm start and Exit

4 Cold start and Exit

Enter one of: 1 2 3 4 ?

1 Modify/View Configuration Values

1 Modify/View network settings 2 Autodiscovery echo interval (secs)

3 Date 4 Time 5 Timezone 6 Modify/View serial port settings

S Save changes and exit 0 Cancel changes and exit

2 Download Menu

1 Filename to download 2 tftp server IP address

3 Download to firmware 4 Temporary dow nl oa d 0 Return to previous menu

Warm-start the module and exit

Cold-start th e mo du le and exit m en us

6 Modify/View Se rial

Configurat io n Val ues

1 Serial port IP address 2 Serial port subnet mask 3 Serial port speed

4 Serial port mode 5 Modem Init String 6 Modem Hangup String

7 Modem Connect Responses 8 Modem No-Connect Responses S Save changes and exit

0 Cancel changes and exit

menus

Modify/View network settings menu shown on next page

Figure 3-1. Configuration Menu Flow Chart

Configuring the Module 3 - 3

1 Modify/View Network Settings Menu

1 Modify/View settings for network interface 1 2 Modify/View settings for network interface 2 3 Modify/View settings for network interface 3 4 Default gateway IP address 5 BOOTP network interface

Enter one of: 1 2 3 4 5 ?

1,2,and 3 Modify/View network interface x settings MAC address 08 11 22 33 44 55

1 IP address 2 Subnet mask

S Save changes and exit 0 Cancel changes and exit

Enter one of: 1 2 S 0?

Figure 3-1. C onfiguration Menu Flow Chart (Continued)

The following sections provide examples of each configuration menu. Each section also contains a table describing t he menu options.

3 - 4 Ethernet RMON MultiProbe Module Installation and Operation Guide

Modifying Configuration Menu Values

The configuration menus contain opt ions that enable you to:

❑ Display additional configuration menus ❑ Display and modify configuration values

T o display a menu from within a menu, type the number of the option and press Return.

To display or m odify a value from a configuration menu:

1. Type the number of the option you want to display or modify and press Return. The configuration menus have a timeout value of 2 minutes. Therefore, you must enter a keystroke to a menu within 2 minute s or the following me ssage displays and the module automatically warm-starts.

Keyboard input timeout. Module warm started and config system exited.

2. To modify configuration menu values, delete one character at a time using the Backspace key. To delete the entire value, press Ctrl-U. When you press Ctrl-U, <CANCEL> appears at the end of the curr ent value to verify that the current value is canceled.

3. Enter the new value and press Return.

4. Select S to save changes and exit the current menu, or 0 (zero) to cancel changes and exit the current menu. Exiting a current menu brings you up one menu level. When you return to the Main menu, you must select either a warm or cold start to re-initialize the RMON MultiProbe Module.

5. To re-initialize the RMON MultiProbe Module, select option 3 for a warm start or select option 4 for cold start.

(Refer to the section R e-initializing the RMON MultiProbe Module later in this chapter for information on the effects of warm and cold starts.)

Configuring the Module 3 - 5

Using the Main Configuration Menu

Use the Main configuration menu to:

❑ Display the Modify/View Configuration V alues menu ❑ Download new firmware ❑ Initiate a warm or cold start

To display the Main configuration menu:

1. Press the front panel Reset button to re-initialize the module.

2. Hol d down the X key within 15 seconds of powering up or resetting the module.

3. If you miss the 15-second window, press the Reset button to re-initialize (warm start) the module.

4. When you hold down the X key, diagnostics are terminated and the following banner is displayed:

Tests interrupted! Boot System Version x.xx for Ethernet RMON Multi Pr obe , Re v x Built on Thu April x, 17:36:58 EST 199x

Loading configuration system. Entering configuration system. Please

wait.....

3 - 6 Ethernet RMON MultiProbe Module Installation and Operation Guide

The Main conf iguration menu appears (Fig ure 3-2) .

Main menu Rev x.xx (Rev x.x)

1 Modify/View configuration values ->

2 Download new firmware ->

3 Warm start and Exit

4 Cold start and Exit

Enter one of: 1 2 3 4 ?

Figure 3-2. Main Configuration Menu

The configuration menus for options 1 and 2 are described in the following sections. Options 3 and 4 are described in the section Re-initializing the RMON MultiProbe Module later in this chapter.

Configuring the Module 3 - 7

Table 3-1 describes the Main menu options.

Table 3-1. Main Configuration Menu Description

Option Result

1. Modify/View

configuration menu

2. Download new

firmware

3. Warm start and

Exit

4. Cold start and Exit

Displays the Modify/View Configuration Value menu. For a description of this menu, refer to the section Using the Modify/View Configuratio n Value Menu later in this chapter.

Downloads new firmware to FLASH memory . For a description of this menu, refer to the section Using the Download Menu later in this chapter.

Warm-starts the module and exits the menu system.

Cold-starts the mod ule and exits the menu system.

3 - 8 Ethernet RMON MultiProbe Module Installation and Operation Guide

Using the Download Menu

Use the Download menu to:

❑ Configure the RMON MultiProbe Module for a software download ❑ Display the current IP address and subnet mask for each interface

To display the Download menu, select option 2 from the Main configuration menu.

Figure 3-3 is an example of the Dow nload menu.

Download Menu Rev x.xx

1 Filename to download -> /chome/spe/onown/rmon_mod/mar06/ax3_field.rom.cf.1.20

2 tftp server IP address ->

3 Download to firmware ->

4 Temporary download

0 Return to previous menu

IP address 1: Subnet mask 1:

IP address 2:

Subnet mask 2: IP address 3: Subnet mask 3:

Default gateway IP address: 151.104.6.1 Enter one of: 1 2 3 4 0 ?

151.104.3.6

151.104.6.7

255.255.255.0

151.104.7.8

255.255.255.0

151.104.8.9

255.255.255.0

Figure 3-3. Download Menu

Configuring the Module 3 - 9

Table 3-2 describes the Download menu options.

Ta b le 3-2. Download Menu Descrip tion

Option Result

1. Filename to

download

2. TFTP Server IP

address

3. Download to

firmware

4. Temporary

download

Displays the pathname of the file to download and enables you to enter a new value. The filename can be a maximum of 127 characters.

If the download file:

❑ Resides in the /tftpboot directory of the server,

you only need to enter the filename.

❑ Does not reside in the /tftpboot directory, you

must entire the complete directory path.

Displays the TF TP server IP address and enables you to enter a new value.

Initiates a download to FLASH memory.

Initiates a download to RAM. This option enables you to run and verify the new software before you initiate a download to FLASH memory . After being reset, the module reverts to the software contained in FLASH memory.

0. Return to previous

Closes the current menu and returns to the Main menu.

3 - 10 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Using the Modify/View Configuration Values Menu

Use the Modify/View Configuration Values menu to:

❑ Set module values (such as date and time) ❑ Display the Modify/View Network Settings menu ❑ Display the Modify/View Serial Port Settings menu

To display this menu, select option 1 from the Main configuration menu. Figure 3-4 is an example of the Conf iguration Values menu.

Modify/view configuration values menu Rev N.NN

Memory configuration 8M bytes Three ethernet ne twork interface s

1 Modify/View network settings

2 Autodiscovery echo interval (secs)

3 Date

4 Time 5 Timezone

6 Modify/View serial port setting s

S Save changes and exit 0 Cancel changes and exit

Enter one of: 1 2 3 4 5 6 S 0 ?

Figure 3-4. Modify/View Configuration Values Menu

1800

Sat 1/28/199 5

22:45:05

PST

Configuring the Module 3 - 11

Table 3-3 describes the Configuration Values menu options.

Table 3-3. Modify/View Configuration Values Menu

Description

Option Result

1. Modify/View

network settings

2. Autodiscovery

Echo Interval

3. Date

4. Time

5. Timezone

6. Modify/View

Serial Port settings

Displays the Modify/View Network Settings menu. For a description of this menu, refer to the section Using the Modify/View Network Settings menu.

Displays the Autodiscovery Echo Interval and enables you to enter a new interval (in seconds) after which the RMON MultiProbe Module sends an Internet Control Messa ge Protocol (ICMP) echo request to the default gateway.

Displays the date and enables you to enter a new value. Use the format: mm/dd/yyyy . Changes are saved immediately and cannot be canceled. To correct an error, re-enter the date.

Displays the time and enables you to enter a new value. Use the format hh:mm:ss. Changes are saved immediately and cannot be canceled. To correct an error, re-enter the time.

Displays the time zone and enables you to enter a new value (for example, EST, GMT).

Displays the Serial Port Configuration menu containing the current serial port settings. For a description of this menu, refer to the section Using the Serial Port Configuration menu later in this chapter.

3 - 12 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Table 3-3. Modify/View Configuration Values Menu

Description (Continued)

Option Result

S Save Changes and

Exit 0

Cancel Changes and Exit

Note: All configuration settings except for the Autodiscovery

Echo Interval field value are preserved after a cold start.

Saves all changes to the configuration menu to non-volatile memory and returns to the Main menu.

Cancels changes to the configuration menu and retu rns to the Main menu.

Using the Modify/View Serial Configuration Values Menu

Use the Modify/View Serial Configuration Values menu to co nfigure the module RS-232 serial port to run Serial IP (SLIP):

❑ Over a direct link ❑ Using a modem

The Serial IP feature enables the RMON MultiProbe Module and a network management workstation to communicate when a network link is not available.

To display this menu, select option 6 from the Modify/View Configuration Values Menu and press Return. The Serial Conf iguration Values menu is displayed with factory-default settings for the serial port (Figure 3-5).

Configuring the Module 3 - 13

Figure 3-5 is an example of the Serial Configuration Values menu options.

Modify/view serial configuration values menu Rev N.NN

1 Serial port IP address

2 Serial port subnet mask

3 Serial port speed

4 Serial port mode

5 Modem Init String

6 Modem Hangup String 7 Modem Connect Responses

/CONNECT/300/CONNECT 1200/1200/CONNECT 2400/ 24 00/CONN EC T 48 00/4800/CONNE CT 9600/ 96 00/CONNECT 1440 0/ 14 400/CONNECT

19200 /1 9200/CONNECT 38 40 0/ 38400/ 8 Modem No-Connect Responses

/NO CARRIER/BUSY/NO DIALTONE/NO ANSWER/ERROR/

S Save changes and exit 0 Cancel changes and exit

Enter one of: 1 2 3 4 5 6 7 8 S O ?

187.187.187.193

255.255.255.192

9600

Direct

^s^MATEOQ0V1X4 S0=1 S2=43^M^d2

^d2^s+++^d2^s^ATH0^M^d2

Figure 3-5. Modify/View Serial Configuration Values Menu

3 - 14 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Table 3-4 describes the Serial Configuration Values menu options .

Table 3-4. Modify/View Serial Configuration Values

Menu Description

Option Result

1 Serial Port IP Address

2 Serial Port Subnet

Mask 3

Serial Port Speed

4 Serial Port Mode

Displays the serial IP address of the RMON MultiProbe Module and enables you to enter a new IP address.

Not used.

Displays the serial port speed that s ets the baud rate used by the serial interface and enables you to enter a new value. Valid values: 1 = 300

2 = 1200 3 = 2400 4 = 4800 5 = 9600 6 = 14400 7 = 19200 8 = 38400

Display the serial connection value which indicates whether or not the connection is direct or is using a modem and enables you to enter a new value. Valid values:

1 = direct 2 = modem 3 = direct with hardware flow control 4 = modem with hardware flow control

Configuring the Module 3 - 15

Table 3-4. Modify/View Serial Configuration Values

Menu Description (Continued)

Option Result

5 Modem Init String

6 Modem H angup

String 7

Modem Connect Response

8 Modem No Connect

Response

S Save Changes and

Exit 0

Cancel Changes and Exit

Display the modem init string and enables you to enter a new value. In modem mode, this string initializes the modem.

Displays the modem hangup string and enables you to enter a new value. In modem mode, this string hangs up the modem.

Displays the modem connect response and enables you to enter a new value. In modem mode, this string contains valid modem connect responses and the baud rate to which the serial port should be set.

Displays the modem no connect response and enables you to enter a new value. In modem mode, this string lists the modem connection failure response codes.

Saves changes to the serial port configuration menu to non-volatile memory and returns to the Modify/View Configuration Values menu.

Cancels changes to the configuration menu and re turns t o the Modify/View Configuration Values menu.

Note: All serial configuration information is preserved after a cold

start.

3 - 16 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Modem Init Strings and Hangup Strings

This section describes the format of the mod em:

❑ Init Strings ❑ Hangup Strings

T o allow the RMON MultiProbe Module to communicate with a modem or a serial data switch, use the modem Init String and Hangup String. The strings contain embedded commands to control how the module interacts with a remote device through the serial interface. Commands are represented as 2-character sequences beginning with the ^ character.

Table 3-5 describes the modem Init Strings and Hangup Strings that the RMON MultiProbe Module supp orts.

Note: Command characters are case-sensitive.

Table 3-5. Modem Init Strings and Hangup Strings

Command Result

^s Sends string that follows, which is terminated by the

next command o r the end of string.

^c Delays for the number of seconds that follows. Discard

any data received instead of storing i t in a buffer for parsing.

^t Sets timeout to the value represented by the decimal

digits that follow. The default timeout is 20 seconds. The timeout may be overridden by a smaller serial Timeout configured for the associated serial interface.

Configuring the Module 3 - 17

Table 3-5. Modem Init Strings and Hangup Strings (Continued)

Command Result

^w Waits for the reply string that follows which is

terminated by the next command or the end of string. Partial and case insensitive matching is applied (that is, if the RMON MultiProbe Module finds the reply string [any case combination] anywhere in the received string, the match is found). If the current timeout elapses without a

match, the module ignores the remaining control string. ^! The ^ character. ^d Delays the number of seconds specified by the decimal

digits that follow. ^b Sends break for the number of milliseconds specified by

the decimal digits that follow. If no digits follow, br eak is

enforced for 250 ms by default.

You m ay insert the following ASCII con trol charac ters into the ^s send string or the ^w reply string:

^@ 0x00 ^A 0x01 ^M 0x0D ^Z 0x1A ^[ 0x1B ^\ 0x1C ^] 0x1D ^^ 0x1E ^_ 0x1F

3 - 18 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

You may also insert binary data into the data stream using the following control sequence for each byte of binary data: ^0x## (where ## is the hexadecimal representation of the data byte).

Two ASCII characters (0-9, a-f, A-F) must follow the ^0x control prefix. For example, ^0x0 D^0x0 A is interpreted as a carriage return followed by a line feed.

Modem Response Strings

This section describes the modem response string formats:

❑ Connect Response Strings ❑ No Connect Respon se Strings

Connect Response - An ASCII string that contains substrings that describe the expected modem connection response code and associated bps rate. The substrings are delimited by the first character in th e string.

The following connect response string example is interpreted in Table 3-6.

CONNECT/300/CONNECT 1200/1200/CONNECT 2400/2400/CONNECT 4800/480 0/CONNECT 9600/9600

Table 3-6. Connect Response Strin g Example

Response code Bps rate

CONNECT 300 CONNECT1200 1200 CONNE CT 24 00 2400 CONNE CT 48 00 4800 CONNE CT 96 00 9600

Configuring the Module 3 - 19

The RMON MultiProbe Module uses the information in this string to adjust the bps rate of the serial interface once you establish a modem connection.

No Connect Response - An ASCII string that contains response codes generated by a modem to report the reason for a connection attem pt failure. The response codes are delimited by the first character in the string.

For example:

/NO CARRIER /BUSY/NO DIALTONE/NO ANSWER/ERROR/

If the RMON MultiProbe Module receives one of the response codes on its serial interface while attempting to make a modem connection, the module issues the hangup command as specified by modem Hangup String.

Using the Modify/View Network Settings Menu

Use the Modify/View Network Settings menu to:

❑ Display the Modify/View Network Interface Settings menu for each

interface

❑ Display and modify the module default gateway ❑ Display and modify the BOOTP network interface

To display this menu, select option 1 from the Modify/View Configuration Values menu.

3 - 20 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Figure 3-6 is an example of the Modify/View Network Settings menu.

Modify/View Ne twork Setti ngs Menu

1 Modify/View settings for network interface 1

2 Modify/View settings for network interface 2

3 Modify/View settings for network interface 3

4 Default gatewa y IP add ress

5 BOOTP network interface

S Save changes and exit 0 Cancel change s an d ex it

Enter one of: 1 2 3 4 5 S 0?

Figure 3-6. Modify/View Network Settings Menu

151.104.3.6

Configuring the Module 3 - 21

Table 3-7 describes the Modify/View Network Settings menu options.

Table 3-7. Modify/View Network Settings Menu Description

Option Result

1 Modify/View

settings for network interface 1

2 Modify/View

settings for network interface 2

3 Modify/View

settings for network interface 3

4 Default gateway

IP address 5

BOOTP network interface

Displays the Modify/View Network Interface 1 Settings menu. For a description of this menu, refer to the section Using t he Modify/View Network Interface Settings menu later in this chapter.

Displays the Modify/View Network Interface 2 Settings menu. For a description of this menu, refer to the section Using t he Modify/View Network Interface Settings menu later in this chapter.

Displays the Modify/View Network Interface 3 Settings menu. For a description of this menu, refer to the section Using t he Modify/View Network Interface Settings menu later in this chapter.

Displays the default gateway IP address for the module and enables you to enter a new value.

Displays the network interface configured for BOOTP and enables you to enter a new value.

3 - 22 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Table 3-7. Modify/View Network Settings Menu Description

(Continued)

Option Result

S Save Changes

and Exit 0

Cancel Changes and Exit

Saves all changes made to the configuration menu to non-volatile memory and returns to th e Modify/View Configuratio n Values menu.

Cancels changes made to the Configuration menu and returns to the Modify/View Configuration Values menu.

Using the Modify/View Network Interface Settings Menus

Each interface has a Modify/View Network Interface Settings menu. Use the interface menus to:

❑ Display the module MAC address ❑ Display and modify the interface IP address ❑ Display and modify the interface subnet mask

To display a Modif y/View Network Interface Settings menu for an interface, select option 1, 2, or 3 from the Modify/View Network Settings menu.

Figure 3-7 is an example of the Modify/View Network Interface 1 Settings menu

Configuring the Module 3 - 23

Modify/View Network Interface 1 Settings Menu

MAC address 08 11 22 33 44 55

1 IP address

2 Subnet mask

S Save changes and exit

0 Cancel change s an d ex it

Enter one of: 1 2 S 0?

151.104.6.7

255.255.255.0

Figure 3-7. Modify/View Network Interface 1 Settings Menu

3 - 24 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Table 3-8 describes the Modify/View Network Interface Settings menu options.

Table 3-8. Modify/View Network Interface Settings Menu

Description

Option Result

1 IP address

2 Subnet Mask

S Save Changes and

Exit 0

Cancel Changes and Exit

Displays the interface IP address and enables you to enter a new value.

Displays the interface subnet mask and enables you to enter a new value.

Saves all changes made to the Inter face menu to non-volatile memory and returns to the Modify/View Network Set tings menu.

Cancels changes made to the Interface menu and retu rns to the Modify/View Network Settings menu.

Configuring the Module 3 - 25

Configuring the Module and Interfaces

Before the RMON MultiProbe Module can become operational, you must configure the follow ing parameters for the mod ule and interfaces:

❑ IP address (for each interface) ❑ Subnet mask (for each interface) ❑ Default gateway (for the module)

Assigning the Interface IP Address and Subnet Mask

You must assign a unique IP network address for each interface. For example, if you do not bridge the three interfaces, you could assign IP

addresses for a subnetted class B network as shown in the following IP address examples:

Note: In both of the IP address examples, each interface has a

subnet mas k of 255.255.255.0.

❑ Interface 1 - 151.104.36.7 ❑ Interface 2 - 151.104.37.8 ❑ Interface 3 - 151.104.38.9

For example, if you bridge the three interfaces, the network portion of the IP addresses can be identical as shown in the follo wing IP address examples:

❑ Interface 1 - 151.104.36.7 ❑ Interface 2 - 151.104.36.8 ❑ Interface 3 - 151.104.36.9

3 - 26 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

This configuration sets up one interface for each bridged segment. To assign an IP address or subnet mask for an interface:

1. From the Main menu, select option 1, Modify/View Configuration Values, and press Return. The Modify/View Configuration Values menu is displayed (see Figure 3-4).

2. From the Modify/View Configuration Values menu, select option 1, Modify/View Network Settings, and press Return. The Modify/View Network Settings menu is displayed (see Figure 3-6).

3. From the Modify/View Network Settings menu, select option 1, 2, or 3 (depending on which interface you want to modify) and press Return. The Modify/View Netw ork Interface 1 Settings menu is displayed (Figure 3-7).

4. To assign: a. An IP address, select option 1. The module displays the current

value and prompts you to enter a new valu e.

b. A subnet mask, select option 2. The module displays the current

value and prompts you to enter a new valu e.

5. To modify an IP address or subnet ma sk, delete one character at a time using the Backspace key. T o delete the entire value, pr ess Ctrl-U.

6. Enter the new value and press Return.

7. Select S to save the changes and return to the previous menu.

8. Repeat steps 3 through 7 to assign an IP address and subnet mask for each interface.

Configuring the Module 3 - 27

Assigning the Module Defau lt Gateway

You must assign a default gatew ay for the RMON MultiProbe Module. To assign a default gateway:

1. From the Main menu, select option 1, Modify/View Configuration Values, and press Return. The Modify/View Configuration Values menu is displayed (see Figure 3-4).

2. From the Modify/View Configuration Values menu, select option 1, Modify/View Network Settings, and press Return. The Modify/View Network Settings menu is displayed (see Figure 3-6).

3. From the Modify/View Network Settings menu, select option 4 and press Return. The module displays the current default gateway and prompts you to enter a new value .

4. Enter the new default gatewa y.

5. To save the changes and return to the previous menu, select S.

3 - 28 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Using BOOTP to Configure the Module and Interfaces

This section describes:

❑ BOOTP Description ❑ BOOTP Configuration Process ❑ BOOTP Requirements ❑ Using BOOTP

BOOTP Description

BOOTP (Bootstrap Protocol) is a UDP/IP-based (User Datagram Protocol/Internet Protocol) broadcast protocol which allows a device to configure itself dynamically without user intervention. Use BOOTP to download configuration information from a BOOTP server to the RMON MultiProbe Module interface configured for BOOTP.

BOOTP Configuration Process

During initialization, the RMON MultiProbe Modul e verifies that the IP address and subnet mask of the interface configured for BOOTP is not set to null (all zeros). If either the IP address or subnet mask are null, the module automatically sends out BOOTP requests every 60 seconds through the designated BOOTP interface until it receives a valid BOOTP response. If the default gateway is originally set to null, the BOOTP server also supplies the module with gateway information.

The response from the BOOTP server supplies the RMON MultiProbe Module with its network parameters. When BOOTP obtains valid addresses, the module stores the parameters in battery-backed RAM and becomes operational.

The RMON MultiProbe Module defaults to interface 1 for a BOOTP server. Because only one interface at a time can be used with BOOTP, you can only download configuration information to the interface configured for BOOTP .

Configuring the Module 3 - 29

To configure other interfaces, use the Modify/View Network Settings configuration menu to change the BOOTP network interface.

BOOTP Requirements

The BOOTP server must perform the following funct ions:

❑ Map hardware addresses to IP addresses ❑ Respond to BOOTP requests from clients ❑ Support the vendor-specific subnet mask and default gateway fields

Using BOOTP

To use BOO TP, add the following information to the BOOTP server bootptab configuration file:

❑ MAC add res s - Hardware address of the RMON MultiProbe Module

interface to be configured

❑ IP address - IP address for the module interface ❑ Subnet mask - Subnet mask for the module interface ❑ Default gateway - Default gateway for the RMON MultiProbe

Module

For additional information on BO OTP configurations, refer to your server documentation.

Sample BOOTPtab file

A sample bootptab file is shown on the next page. If necessary , create t his file on the BOOTP server.

3 - 30 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

# /etc/bootptab: database for bo otp server (/etc/bootpd) # Blank lines and lines beginning w ith '#' are ignored. # # Legend: # # first field -- hostname # (should be full domain name) # # hd -- home directory # bf -- bootfile # cs -- cookie servers # ds -- domain name servers # gw -- gateways # ha -- hardware address # ht -- hardware type # im -- impress servers # ip -- host IP address # lg -- log servers # lp -- LPR servers # ns -- IEN-116 name servers # rl -- resource location protocol servers # sm -- subnet mask # tc -- template host (points to similar host entry) # to -- time offset (seco nds ) # ts -- time servers # Define a global entry which specifies th e information every host uses. # global.dummy:\ :hd=/tftpboot:bf=null # Define different master entries for each subnet. . .

default:vm=rfc1048:hd=/tftpboot:bf="null":sm=255.255.255.0: js-test-64:ip=151.104.15.2:\

ht=ethernet:\ ha=081122334455:\ gw=151.104.15.1:\ tc=default

Configuring the Module 3 - 31

Assigning Interfaces to Networks

To assign RMON MultiProbe Module interfaces to networks, you can use either:

❑ DIP switch settings, if your hub is unmanaged (an ONline or ONcore

management module is not installed in the hub).

❑ ONline or ONcore network management commands (if an ONline or

ONcore manageme nt module is installed in the hub).

Y ou can assign the three RMON MultiProbe Module network interfaces as follows:

❑ Interface 1 to Ethernet 1 or Isolated ❑ Interface 2 to Ethernet 2 or Isolated ❑ Interface 3 to Ethernet 3 or Isolated

Note: Each interface can only be configured to its corresponding

Ethernet networ k or isolated (that is, Interface 1 to Ethernet 1, Interface 2 to Ethe rnet 2, Interface 3 to Ethernet 3).

3 - 32 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Using the DIP Switch to Assign Networks

If you have an unmanaged hub, use the DIP switch on the module to assign networks to the RMON MultiProbe Module interfaces. However, the DIP switch settings are ignored if the fo llowing two conditions are met:

❑ A network management module is installed in the hub. ❑ The master management module has DIP_CONFIGURATION disabled.

The RMON Mult iProbe Module contains an 8-posi tion DIP switch (SW1). This DIP switch allows you to configure and enable the three RMON MultiProbe Module interfaces to the corresponding Ethernet networks.

Figure 3-8 shows the DIP switch location on the module

SW1

Dip Switches

Off

12345678

CH1EN

CH2EN

NOT USED

CH3EN

Figure 3-8. DIP Switch Location

Backplane DI N Connector

NOT USED

Configuring the Module 3 - 33

T able 3-9 describes the positions of the DIP switches required to configure and enable the RMON MultiProbe Module interfaces to corresponding Ethernet networks. As the table shows, switches 1, 2, 6, 7, and 8 are not used.

Ta b le 3-9. Network Selection DIP Switch Settings

Switch

Setting

Network Selection

ON OFF

1 Reserved 2 Reserved 3 Ethernet 1 Isolated 4 Ethernet 2 Isolated 5 Ethernet 3 Isolated 6 Reserved 7 Reserved 8 Reserved

3 - 34 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Using Management Commands to Assign Interfaces to Networks

With a terminal attached to a 3Com management module console, you can use management commands to assign the RMON MultiProbe Module interfaces to networks.

The following 3Com network management modules enable you to assign interfaces to networks:

❑ ONline Ethernet Management Module (EMM) (Version V4.20) ❑ ONcore Distribu ted Management Mo dule (DMM) (Version V2.10)

To configure all other RMON MultiProbe Module parameters (such as IP address, subnet mask, and serial configurations), use the RMON MultiProbe Mod ule co nfiguration menu s.

Examples of the management commands for assigning networks are discussed here briefly. For additional inf ormation on management commands, refer to the appropriate management module commands guide.

Note: Management commands that refer to ports are applicable

to the RMON MultiProbe Module interfaces. (For example, the SET PORT a nd SHOW MODULE_PORT co mmands appl y to the module inter faces.)

Configuring the Module 3 - 35

Management Command Exa mples

To assign interface 1 on the RMON MultiProbe Module in slot 7 to Ethernet 1, use the following network management command:

SET PORT 7. 1 NE TW OR K ETH ER NE T_ 1 Port 07.01 network id set to ETHERNET_1.

To assign interface 1 to isolated, use the following command:

SET PORT 7. 1 NE TW OR K ISO LA TE D Port 07.01 network id set to ISOLATED.

To assign interface 3 on the RMON MultiProbe Module in slot 7 to Ethernet 3, use the following network management command:

SET PORT 7. 3 NE TW OR K ETH ER NE T_ 3 Port 07.03 network id set to ETHERNET_3.

You cannot assign an interface to a network other than its corresponding network. For exam ple, a management m odule aborts the followin g command:

SET PORT 7. 3 NE TW OR K ETH ER NE T_ 1 Port 3 can only be set to ETHERNET_3 or

ISOLATED: command aborted.

3 - 36 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Saving Network Assignments

After you ma ke conf iguration changes to the m odule, issue the SAVE MODULE_PORT command as shown to save the interface network configurations.

SAVE MODULE_PORT

Note: Failure to save the interface network configurations may

result in loss of configuration data.

Showing Module and Interface Configurations

To display module and interface configuration informati on, use the following management commands:

❑ SHOW MODULE ❑ SHOW PORT

These commands are described below.

Show Module Command

The SHOW MODULE command enables you to display both brief (no_verbose) and verbose information about a particular module. Brief is the default.

The syntax of the S H OW MODULE command is:

SHOW MODULE {slot} {verbose} {no_verbose}

Configuring the Module 3 - 37

The following output is an example of the SHOW MODULE VERBOSE command issued for an RMON MultiProbe Module installed in slot 6 of an ONline System Concentrator:

ONline > sho w mod ule 6 v erb os e

Slot M od ule Vers ion N etw or k Ge ne ral I nfo rm ati on

---- - -- --- -- --- -- -- -- --- - --- -- --- -- -- -- -- --- -- --- ----- - 06 RM ON- EM P-3 Vx.xx PER_PORT Mo dul e is up

RMON-E MP -3: E the rnet RM ON Mu lti Pr obe Boot V er sio n: vx.xx

Native S oft wa re Versi on : vx.xx Native B oot S oft ware Ve rsi on : vx.xx

Show Port Command

The SHOW PORT command enables you to display brief and verbose information on an individual interface or on all interfaces.

The syntax of the SHOW PORT command is:

SHOW PORT {

The following output is an example of the SHOW PORT ALL command issued for a module installed in slot 6:

ONline > show por t 6.all

slot.port

{

slot.

all} {no_verbose}

} {verbose}

Port D is pla y for Modu le RM ON -EM P- 3: Port Mode Status Network Ge ne ral I nfo rm ati on

----- -- ----- - - ----- ----- ---- --- ----- --- --- ----- ----- ----- ---

06.01 LO GICAL OKAY ETHERNET _1

06.02 LOGICAL OKAY ETHERNET_2

06.03 LO GICAL OKAY ETHERNET _3

3 - 38 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

The following output is an example of the SHOW PORT VERBOSE ALL command issued for a module installed in slot 6:

ONline > sho w por t 6.a ll ve rb ose

Port D is pla y for Modu le RM ON -EM P- 3: Port Mo de S tatus N et wor k Ge ner al Info rma ti on

----- -- --- -- - - ----- -- --- -- --- -- - - -- --- -- -- -- -- --- -- ----- --- -- --- -

06.01 LO GIC AL O KAY E TH ERN ET _1 Port C on nec to r: B AC KP LAN E

IP Add re ss: 1 51 .1 04. 6. 28 Statio n Add re ss: 0 8- 11 -22 -3 3-4 4- 59

06.02 LO GIC AL O KAY E TH ERN ET _2 Port C on nec to r: B AC KP LAN E

IP Add re ss: 1 51 .1 04. 16 .2 Statio n Add re ss: 0 8- 11 -22 -3 3-4 4- 5A

06.03 LO GIC AL O KAY E TH ERN ET _3 Port C on nec to r: B AC KP LAN E

IP Add re ss: 1 51 .1 04. 17 .2 Statio n Add re ss: 0 8- 11 -22 -3 3-4 4- 5B

Configuring the Module 3 - 39

Re-initiali zi n g the RM ON Multi Probe Mod ule

Once you install and c onfigure the RMON MultiProbe Module and it has successfully completed its diagnostics, the module functions without user intervention . You can re-initialize the module by performing on e of the following actions:

❑ Issue the RESET MODULE command from the management module

(perform s a wa rm start)

❑ Press the front panel Reset button (performs a warm start) ❑ Initiate one of the following starts from the Main configuration

menu: – Warm start – Cold start

The effects of warm and cold starts are discussed below.

3 - 40 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Warm -Starting the RMON MultiProbe Module

When you re-initialize the RMON MultiProbe Module by initiating a warm start (for example, by pressing the Reset button), all collected information stored in the module Random Access Memory (RAM) is lost. Configuration information, however , is not lost. T able 3-10 lists the information preserved and lost upon a warm start of the module.

Table 3-10. RMON MultiProbe Module Information Preserved

and Lost on Warm Start

Information Preserved Information Lost

All installed filter and channel tables Captured Packets Buffer Control Table Counted Packets History Control Table Historical Ethernet Statistics Alarm Table Current Ethernet Statistics Event Table Matrix Tables Community Access Table Entries Host Top N Tables Client Table Entries Host Tables Module Configuration Entries

(IPAddress, Subnet Mask) TFTP Server Address Download Filename Time Zone Serial Port Configuration

Information Serial Connection Table Trap Destination Table

Logs

Configuring the Module 3 - 41

Cold-Starting the RMON MultiProbe Module

When you re-initializ e th e RMON MultiProbe Module by initiating a cold start (for example, by selecting option 4 from the Main Configuration menu), all network management information is lost, with the exception of the following interface and module configuration information:

❑ IP address (for each interface) ❑ Subnet mask (for each interface) ❑ Default gateway (for the module)

Table 3-11 lists the information that is preserved and lost upon a cold start of the module.

Table 3-11. RMON MultiProbe Module Information Preserved

and Lost on Cold Start

Information Preserved Information Lost

Module Configuration Information (IP Address, Subnet Mask, Default Gateway)

TFTP Server Address Client Table Entries

Download Filename Packet Capture Filters Time Zone Captured Packets Serial Port Configuration

Information

3 - 42 Ethernet RMON MultiProbe Module Installatio n and Operation Guide

Community Access Table Entries (reverts to defaults)

(reverts to defaults)

Counted Packets

Historical Ethernet Statistics Current Ethernet Statistics Host Tables Matrix Tables

Table 3-11. RMON MultiProbe Module Information Preserved

and Lost on Cold Start (Continued)

Information Preserved Information Lost

Host Top N Tables Logs Alarm Table Filter Table Channel Table Buffer Control Table Event Table Serial Connection Table Trap Destination Table

Configuring the Module 3 - 43

Troubleshooting

This chapter provides hardware troubleshooting information which you can use if the RMON MultiProbe Module fails to operate correctly. If after reviewing the information in this chapter you cannot correct the problem, contact your 3Com representative for further assistance.

This chapter contains the following sections:

❑ Troubleshooting Startup Problems ❑ Troubleshooting Malfunctions ❑ Troubleshooting Network Connectivity Problems ❑ Technical Assistance

Troubleshooting 4 - 1

Troubleshooting Startup Problems

This section describes how to troubleshoot startup problems by monitoring the Interface Status LEDs and the Module Status LED on the RMON MultiProbe Module facep late.

When you first install the RMON MultiProbe Module in the hub, the module runs the following diagnostics:

❑ SRAM Data Bus ❑ SRAM Address Bus

The Interface Status LEDs display a patt e rn during the execution of each diagnostic test. The patterns correspond to the test as indicated in Table 4- 1.

Table 4-1. Diagnostic Tests and Interface Status LEDs

Diagnostic

SRAM Data Bus On Off Off SRAM Address B us Off On Off

If the SRAM Data Bus or SRAM Address Bus diagnostics fail, the pattern of the failed diagnostic remains on the In terface Status LEDs. If this occurs, contact the 3C om Customer Service Center for corrective action.

4 - 2 Ethernet RMON MultiProbe Module Installation and Operation Guide

Interface 1 Status LED

Interface 2 Status LED

Interface 3 Status LED

Troubleshooting Malfunctions

Table 4-2 lists the symptoms of operating malfunctions for the RMON MultiProbe Module and shows possible causes and corrective actions for these malfunctions.

Ta ble 4-2. Troubleshooting Malfunctions

Symptom Possible Cause Corrective Action

Module Status LED does not illuminate or blink

Module Status LED blinks continuously

Module Status LED illuminates briefly and then remains off

Module Status LED blinks continuously

An unrecoverable err or i n th e mo du le hardware or software has occured.

Interprocessor failure.

68030 diagnostics failed.

i960 diagnostics failed.

Contact the 3Com Customer Service Center.

Press the Reset button on the front panel to reset the module.

Contact the 3Com Customer Service Center.

Attach a terminal to the module RS-2 32 port. Reset the module. Note the failure code. Contact the 3Com Cu stomer Service Center.

Troubleshooting 4 - 3

Table 4-2. Troubleshooting Malfunctions (Continued)

Symptom Possible Cause Corrective Action

Module does not power up

Module is not fitted correctly against backplane.

The hub is not receiving electrical power.

Module is unable to communicate with hub backplane.

Remove the module from the slot and replace it in the slot. This action ensures that the module is fitted correctly.

Place the module in a different slot in the hub.

Check that the hub is receiving power.

Test for power at the wall outlet by plugging in another device.

Select another outlet on a different circuit if necessary.

Reset the RMON MultiProbe Module through the management module or press the Reset button on the RMON M ultiProbe Module front panel.

4 - 4 Ethernet RMON MultiProbe Module Installation and Operation Guide

Table 4-2. Troubleshooting Malfunctions (Continued)

Symptom Possible Cause Corrective Action

Attached terminal does not operate

The terminal is malfunctioning.

Cables are unattached.

Cables are not the correct type.

The terminal is configured incorrectly.

Follow the troubleshooting procedures recommended by the terminal manufacturer.

Make sure that the cable connections at both ends are secure.

Make sure that the cable attached to the terminal conforms to the specification as described in Appendix A, Specifications, the section titled Connectors and Cables.

Check the console po rt configuration. Verify that the terminal is configured as 8-bit data, no parity, 1 stop bit, and 9600 baud rate.

Troubleshooting 4 - 5

Table 4-2. Troubleshooting Malfunctions (Continued)

Symptom Possible Cause Corrective Action

The terminal fails to respond to commands entered at the keyboard

The terminal is not receiving commands.

The keyboard cable is attached incorrectly.

The RS-232 port is malfunctioning.

Power off the terminal, wait 30 seconds, and then power it on again.

If the terminal still does not respond to commands, power off the terminal and disconnect the keyboard cable. Then reattach the keyboard cable and power on the terminal.

Check the state of the Serial Activity LED on the module faceplate (see Figure 2-3). If the LEDs indicate a problem, contact your 3Com representative for assistance.

Verify the RS-232 port configuration using the RMON configuration menus. Ensure the RS-232 port is configured to 9600 baud, 8-bit, no parity, and 1 stop bit.

4 - 6 Ethernet RMON MultiProbe Module Installation and Operation Guide

Table 4-2. Troubleshooting Malfunctions (Continued)

Symptom Possible Cause Corrective Action

The terminal fails to respond to commands entered at the keyboard (continued)

Panic message appears on the terminal

The RS-232 cable pinouts are wired incorrectly or the cable is defective.

The terminal is malfunctioning.

Module parameters are lost from NVRAM.

Try a different RS-232 cable. Refer to Appendix A, Specifications, for informatio n on RS-232 cable pinou ts.

Repair or replace the terminal.

Contact the 3Com Customer Support Center.

Troubleshooting 4 - 7

Troubleshooting Network Co nnec tiv ity P roblems

If the RMON MultiProbe Module does not appear to be transmitting or receving traffic properly on the network, it could indicate that there is no connection to the network. Try per forming one or more of the following troubleshooting actions:

❑ From the 3Com management interface (for example, ONline

management modu le), verify th at the RMON MultiProbe Module interfaces are set to the appropriate networks.

❑ Using the RMON MultiProbe Module configuration menus, verify that

the following terminal parameters are set correctly: – IP address – Subnet mask – Default gateway For terminal configuration information, refer to Chapter 2, Installing

the Module, the section Connecting a T erminal.

❑ Use the ping utility to confirm t here is network connectivity. ❑ Verify that the Ethernet configuration is valid. Refer to the

document ation that accompanied the Ethernet media modules for more information.

If the RMON MultiProbe Module responds to pings, but not to SNMP, verify that the RMON client software community string matches the RM ON MultiProbe Module community string default value. The RMON MultiProbe Module default community name is admin. (Commu nity names are case-sensitive.) The admin community name provides read-write access.

Note: Y ou can only modify the community name using the RMON

client software.

4 - 8 Ethernet RMON MultiProbe Module Installation and Operation Guide

Technical Assistance

You can receive assistance for installing and troubleshooting the Ethernet RMON MultiProbe Module by calling either your 3Com reseller or 3Com Technical Support. Be prepared to supply a representative with the following information:

❑ Description of the problem ❑ Steps you have tak en to try and correct the problem ❑ Type and software version of the ONline network management

module being used

❑ Version of software installed on your Ether net RMON Multi P robe

Module

❑ Status of the front panel LEDs ❑ Configuration of your concentrator

(you may find it helpful to refer to the Slot Usage Chart in Appendix B of the ONline System Concentrator Installation and Operation Guide for a record of this information)

❑ Status of powerup diagnostics

Refer to Appendix B for instructions on contacting Technical Supp ort for your product .

Troubleshooting 4 - 9

Specifications

This appendix lists specifications for the 3Com RMON MultiProbe Module, including:

❑ Electrical Specifications ❑ Environmental Specifications ❑ Mechanical Spec ifications ❑ General Specifications ❑ Connectors and Cables ❑ Memory Configuration Allocation

Specifications A - 1

Electrical Sp eci fic atio ns

Power Requirements +5 V +/- 4%

+12 V +/- 5%

2.5 A for +5 V

0.008 A for + 12 V

Fuse 4.0 A Fast Blow for +5 V

0.5 A Fast Blow for +12 V

Consumption 13 watts

Environmental Speci fic atio n s

Operating Temperature 0° to 40° C (32° to 122° F) Stor age Temperature -30° to 65° C (22° to 149° F ) Humidity Less than 95%, noncondensing BTU/hr 44.37 MTBF/hr 119,563

A - 2 Ethernet RMON MultiProbe Module Installation and Operation Guide

Mechanic al Sp eci fic atio ns

Width 1.0” Length 10.275” Height 8.5” Weight 1.25 lbs

General Specific atio ns

RMON Processor

Network Processor

Special Circuits Real Time Clock

Ethernet Interface 1

Ethernet Interface 2

Intel 960CF 33 Mhz processor 128 KB Boot Flash 512 KB A pplication Flash 8 MB DRAM SIM supported 128 KB NVRAM (Battery Backed SRAM )

Motorola® 68302 16 Mhz processor 512 KB Flash (Boot and Application) 512 KB SRAM

Per Port Correlation capability Ethernet 1 or Isolated

Ethernet 2 or Isolated

Specifications A - 3

Ethernet Interface 3

Configuration Using SLIP, BO OTP, inband and out-of-b an d

Ethernet 3 or Isolated

management

Connectors an d Cabl es

Use the information in this section to ensure that the cables and connecting hardware meet requirements. For proper operation, use only approved cables when you in stall all equi pm ent.

This section describes:

❑ RS-232 25-Pin Port Connector Pinouts ❑ RS-232 Crossover Cable for a Terminal With a 25-Pin Connector ❑ RS-232 Straight-Through Cable for a PC With a 9-Pin Connector ❑ Modem Cable Pinouts

A - 4 Ethernet RMON MultiProbe Module Installation and Operation Guide

3COM RMON-EMP-3 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Audience

Structure of This Guide

Document Conventions

Related Documents

3Com Documents

Reference Documents

RMON Overview

RMON Architecture

RMON Probe

RMON Client

Etherne t RMON Groups

RMON MultiProbe Modu le Overvi ew

RMON MultiProbe Modu le Features

Theory of Operation

Sample Application

Precautionary Procedures

Quick Install atio n

Unpacking Procedures

Installing t he RMON MultiProbe Module

Connecting a Terminal

Initializi n g the RM ON Multi P robe Mod ul e

Monitoring the Front Panel

Configuration Menu Overview

Modifying Configuration Menu Values

Using the Main Configuration Menu

Using the Download Menu

Using the Modify/View Configuration Values Menu

Modem Init Strings and Hangup Strings

Modem Response Strings

Using the Modify/View Network Settings Menu

Configuring the Module and Interfaces

Assigning the Module Defau lt Gateway

BOOTP Description

BOOTP Configuration Process

BOOTP Requirements

Using BOOTP

Sample BOOTPtab file

Assigning Interfaces to Networks

Using the DIP Switch to Assign Networks

Management Command Exa mples

Saving Network Assignments

Showing Module and Interface Configurations

Show Module Command

Show Port Command

Re-initiali zi n g the RM ON Multi Probe Mod ule

Warm -Starting the RMON MultiProbe Module

Cold-Starting the RMON MultiProbe Module

Troubleshooting Startup Problems

Troubleshooting Malfunctions

Troubleshooting Network Co nnec tiv ity P roblems

Technical Assistance

Electrical Sp eci fic atio ns

Environmental Speci fic atio n s

Mechanic al Sp eci fic atio ns

General Specific atio ns

Connectors an d Cabl es